Locking device for cremorne bolts.



0. C. RIXSON. LOCKING DEVICE FOR CREMORNE BOLTS.

APPLICATION HLED SEPT. I1, I91].

Patented Dec 11, 1911.

INVENTOR.

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LOCKING nsvrcn ron onniaoianneotrs,

Application filed. September 11, 1917. $eria1N'o.190,790.

To all whom it may concern:

Be it known that I, Oscar C. ItrXsoN, a citizen of the United States, residing at New ltochelle, in the county of Westchester and tdtate of New York, have invented certain new and useful Improvements in Looking Devices for Creniorne Bolts, of which the following is a full, clear, and exact description.

This invention relates to Cremorne bolts and more particularly to the type of locking devices therefor which comprise latch bolts mounted upon the vertical rods of the Creniorne bolt and keepers with which said latch bolts engage to hold the door or window locked.

Une of the objects ofthe invention is to provide a locking device of this character in which guiding means is provided for insuring that the end of the latch bolt will always properly engage the keeper upon a. movement of the vertical rods.

Another object of the invention is to pro vide a locking device of this character in which the strains, which would otherwise react upon the vertical rods if an attempt were made to open a locked door or window, are carried by a separate part which is rigidly fastened to the sash of the door or casement window so that no twisting of the vertical rods can take place, as well as affording a more rigid lock for the door or window.

Uther objects of the invention will be apparent from the detailed description hereinafter to follow when taken in conjunction with the accompanying drawings, and the novel features of the invention will be pointed out in the appended claim.

In the drawings:

F igure 1 shows a Cremorne bolt equipped with locking devices constructed in accord ance with the principles of the invention;

Fig. 2 is an elevation of one of the locking devices upon an enlarged scale;

Fig. 3 is a plan of the locking device; and

Fig. 1 is an end elevation thereof.

The device is adapted to be used with any type of door or casement and the abutting sashes of two casement windows are shown and indicated 1 and 2. A. Cremorne bolt of the common construction is mounted upon one of the sashes in the usual manner, and comprises two vertical. rods 3 and 1- which are held in position by guides 5 adjacent their tops and bottoms. The rods 3 and 41 of the Cremorne bolt are projected and with- Spccification of Letters Patent. i i Pattglltd D efiril, 1917.

drawn by means of an operating handle 6, the operating mechanism which connects the handle to the bolts being concealed within a casing '7, and its specific mechanism forming no part of the present invention.

The locking device which forms the basis of the present invention consists of latch bolts 3 which are secured to the rods 3 and 4: at spaced intervals, as, for example, each rod being provided with two such latch bolts as shown in Fig. 1. The latch bolts 3 may be secured to the rod by rivets 9, or in any other desired manner. In the form shown, each latch bolt comprises a body portion, which is secured as described to the rod 3, and a bolt proper which is adapted to engage a keeper 11 carried by the sash of the other window. This keeper consists of a base 12 and a hook-shaped member 13 spaced from the base 12 a sufficient distance to permit the end of the bolt 10 to engage against its inner vertical face when the bolt is shot. The free end of the hooleshaped member is preferably beveled as at 13 so as to provide a guiding surface for the bolt 10 which slides into engagement with the keeper when the rods 3 and 4; are moved to the locking position by the handle 6. The latch bolt 8 also carries an offset or lug 1 1, and secured to the sash beneath the latch. bolt is a plate 15 which is provided with a hoolcshaped projection 16 which fits over the lug 14, these parts being in sliding engagement. The plate 15 is rigidly secured to the sash of the window by screws 16.

When the Cremorne bolt is operated the engagement of the lug 1 1 with its guide 16 prevents the vertical rods 3 and 1 from twisting which will insure the bolt 10 sliding freely under the end 13 of the keeper 1.1 to rigidly lock the window in its closed posi tion, and any strains which would otherwise be placed upon the rods 3 and 41 of the Cremorne bolt when an attempt is made to open a locked window, is carried by the hookshaped guide 16 taking the entire strain off the rods 3 and i and their guides 5 and 6. In other words, when the bolt is in its locked position, since the plate 15 is rigidly secured to the sash, the engagement of the parts 1-61 and 16 will hold the latch bolt 8 in place as rigidly as if the bolt itself were secured to the sash instead of being mounted upon the movable rods and 4; of the Cremornc bolt.

I claim:

In combination with the sliding rod of a iiarnnr ornlion,

Cremorne bolt mounted upon a swinging adapted to engage said lug upon said latch closure, a latch bolt mounted upon said slidbolt when said rod is actuated. ing rod, said latch bolt having a lug pro- In Witness whereof, I subscribe my signajecting therefrom, a keeper adapted to enture.

5 gage said latch bolt, and a l10okshaped member carried by the swinging closure OSCAR C. RIXSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

